Mouthpiece for telephone-transmitters.



M. S. HUFSCHMIDT & G. F. WAGNER.

MOUTHPIECE FOR TELEPHONE TRANSMITTERS.

PatentedJune 8, 1909.

APPLICATION FILED NOV.10,190B.

' 'W/ TNE'SSE'SI MILTON S. HUFSCHMIDT, OF SAN FRANCISCO AND CHARLES l". WAGNER, F OA KZAND,

CALIFORNIA; SAID WAGNER ASSIGNOR TO SAID HUFSCHMIDT.

MOUTHPIE FO R TELEPHONE-TRANSHITTERS.

Ta aZZ whom it may concern.

Be it" known that We, MILTON S. HUF- scnmnr, residing .11 the city and county of i San Francisco, State of California, andf composition havinfilthe from on the so of the mouth- CHARLES F. Waounn, residing in Oakland. i in the county of Alameda, in said State, citizens of the United States, have invented I new and useful Improvements in Mouth-f; pieces for Telephone-Transmitters, of which the following is a specification; I t

This invention relates to improvements! .made inthe construction of a mouth-piece for a telephone transmitter,

The ob ect 01 the invention is chieflv to l provide a telephone mouth-piece having the property of exhaling or giving oil disinfecting E or antiseptic vapors especiallv on or m proximity to thosesurl'aces of tie mouth-piece that are the more directly exposed to the breath of-the person using the-instrument. i A further object of the invention is the production of a telephone mouth-piece hav- ,ing the property of absorbing or taking into the substance of its structure a liquid-disiniectant, and of iving off the vapors. there i r aces hich are the more directly exposed to the breath of the person speaking into the mouth-piece. Afurthor object of the invention is to provide a comparatively inexpensive attachment to a telephone transnntter which shall constitute bot a mouthpiece and a'disinfctant container. These and other objects ,wc attain: and l secure in and by the construction and combination of parts producing an improved disi infecting mouth-piece as hereinafter described, the accompanying drawing referred to therein illustrating a telephone mouthpiece of our invention.

Figure 1 represents in side-view a mouthpiece of our invention mounted on a" telephone transmitter. Fig. 2 is a sectionalview taken longitudinally through the center iece. Fig. 3' is a view of the ferrule or coup 'ng by which the mouth-piece is attached to the transmitter.

A novel feature in the resent improvements consists in forming the body of a telephone mouth-piece of a porous material or roperty of absorbing or taking into e su stance of its structure a li uid disinfectantsuch as a solution of forma dehyde-and having also sufiicient i hard and durable quality to retain its shape l,

Specification of Letters Patent. 'Application'flled November 10, 1908. Serial ."o. 481,986.

l sorbcd as ferrcd location for the ex osed Patented .rufie $1909".

and to withstand the wear to which a mouthpiece is ordinarily exposed. Fire clay or any material or composition of a plastic nature that can be molded, turned .or otherwise brought to the required shape and of sufiicient porosity when baked or fired to possess 'the proper absorbing quality, can be used for the purpose. And as formed of such material the body a of the mouth-piece 1s preferably molded to shape with a solid or closed bottom b, in which apertures (I are formedeither in the operation of molding or afterward.

. The sides of the body'arepreferably made i somewhat tapering, preserving or conformng to the usual shape of the ubber mouthpiece, excepting that the walls of the trumpet sha ed body are made thicker than in the rub )er mouth-piece.

In the course of she ing and baking the mouth-piece if it be lnacl e of plastic material, or if it be formed from porous material with out being burned the surfaccsoi' the mouthpiece areglazed or coated to render them nonporous, both for the purpose of retaining the absorbed liquid with which the body is filled before it is placed on the transmitter, and also to prevent dust from adhering to the surfaces and to insure greater cleanliness generally. 1

The glazing or coating being applied in such manner as to cover the surfaces both within and without, is nevertheless omitted or removed on one part or on several parts of the surface sons to leave the porous sub stance of the bodv exposed to a sufficient extent for the liquid to be taken up and;ab-

well as to escape and be given off by cvaporations or as exhalatlons. These portions of the surface uncovered and exposed are formed or produced in one way by omitting the glazing or coating; in anotherway, by grinding or otherwise removing the coating. These uncovered or unglazed portions are located preferably on the interior surface of the mouth-piece, as seen in Figs. 1 and 2, where the porous substance of the body indicated at f 18 exposed on the surface in a ring or band extending around the inner surface in. close relation. to theperforated, ms

diaphragm or bottom I). This 18 the preortion of the porous substance of the ody', ut the same may be located at other points either on the outside ql' the inside of the mohth-piece, and

' eess with the li uid.

mouth-piece as illustrated in Figs. 1 and 2,

the li uid is less liable to esca e and drip from t 1e rim of the. mouth-piece efore being taken up or dissipated by the eve crating action or influence of the breath, in t e event ofthe porous body having been filled to ex- Being locate on the inner wall of the mouth-piece, the exposed porous portion enables the li uid to be applied and readily absorbed b drop ing it into the mouthiece, while ho ding t 1e latter at an angle wit 1 the lower side of the rim slightly elevated: or else by immersing the article in the liquid and then slowly revolving it, so as to bring the exposed porous portion at the bottom in contact with the liquid and until the substance of the body becom s sufficiently saturated. If a move or depression be made in the exose porous portion f, as indicated at f Fig. 2, the liquid will be more easily absorbed when it is poured or dropped into the mouthlece.

L'sually after the first treatment in which the mouth-piece has taken u as much as itwill absorb without being lie is to dri the loss of liquid by evaporation is readi y replaced by introducing a few drops from time totime into the mouth-piece and then turning-it a few times on the transmitter without removing 1i.

A solution of formaldehyde, or other (ilSlllfecting substance in a liquid form, applied to the mouth-piece of our invention in the above described manner will give oil vapors or exhalations to u suliicient extentor degree to continuously disinfect the Surfaces of the body is made it would not be practicable to form the screw-thread directly on the body itself.

- We clain1,:-

1. A telephone mouth-piece having a porous body adapted to absorb a disinfecting liquid, anda non-porous coating covering the surfaces of the body excepting a por ion thereof of relatively small area, which is left exposed.

2. A telephone mouth-piece formed of porous material of an absorbing character capable of takingu a disinfectant in liquid form, the surfaces 0. the body of the mouth-piece being non-porous and adapted to confine the liquid within the porous body and having a portion of the porous body of relatively small area exposed to the atmosphere.

3. As a new article of manufacturea telephone mouth-piece formed of a porous, liquid absorbing substance, and having its "sinfaces rendered nonorous exceptinga portion thereof of relativel small area where the porous substance 0 its body is exposed at the surface.

4. As a new article of manufacture a telephone mouth-piece having a porous body and non-porous surfaces; a portion of the porous body being exposed at the surface for charging the body with a liquid disinfectant.

5. Asa new article of manufacture a telephone mouth-piece having a porous body containing a disinfectant in a h uid form, a non-porous coating on the su aces of the body, and a section of the said coating being omitted on a portion of said surfaces for escape of the disinfectant.

6. A telephone mouth-piece comprising a porous body and a coating of a non-porous character covering the surfaces of the body.

5 a portion of said coating of relatively small area being removed to expose the porous I substance of the body.

mouth-pieciwhich are exposed to contamij nation from the breath of lhe persons using i adapted to absorb and hold a liquid and hav- As a meansof detm-hably securing this 1 ing surfaces of nonorous character ada ted the transmitter.

mouth-piecito the transmitter we fix on the base or smaller end of the body a metal forrule I/ having a screw-tbreaded end I: that is .litted to screw into the socket on the transmitter; the ferrule being fixed in pinuon the i mouth-piece by spinning the Iltlk I over a the chain-i: to: of the material of unich the z 7. In a telephone mouth-piece, the combination with a body of a orous character to confine the liqui within the porous ody and having a portion of the porous body exposed at the surface, of a coupling on the end of the body as a means for fixing the mouthpiece in place.

MILTON S. HUFSCHMIDT. CHARLES F. WAGNER. itnesws M. REGNER,

EDWARD E. Osnoim. 

